KCI prepared an EIS for mobility improvements along the 14th Street Bridge Corridor in Washington, DC and Arlington, Virginia. The multi-year study was for the Federal Highway Administration, Eastern Federal Lands Highway Division in cooperation with the District Department of Transportation, Virginia Department of Transportation, Arlington County, the Department of Defense (Pentagon Reservation), and the National Park Service.
The 14th Street Bridge corridor (I-395) is among the most heavily congested in the Washington Region, and the five-mile-long study area presented unique transportation challenges because of its location adjacent to the Pentagon and Washington, DC’s monumental core. Numerous public meetings, stakeholder meetings, and agency briefings have been held and the overall reaction has been positive.
The primary objective of the EIS was to evaluate all reasonable alternatives for meeting the purpose and need: reducing congestion, enhancing safety, and improving traffic operations along the corridor. To that end, KCI collected data relevant to understanding the problems to be solved, developed a full range of transportation alternatives, and analyzed traffic impacts using a VISSIM model.
The project incorporated multi-modal planning, expansion of new technologies such as Intelligent Transportation Principles (ITS) in the Corridor and Transportation Demand Management (TDM) and Transportation System Management (TSM) approaches to strategically connect bicycle/pedestrian facilities, transit services, and roadways into an efficient intermodal, interconnected system. These management strategies increased the overall efficiency and safety of the Corridor without adding vehicle capacity to the existing system and will have minimal impact on the environmental, social, and historic resources in the study area.
KCI conducted an extensive program of public involvement and public meetings for the project. A comprehensive public outreach plan was prepared that included a Citizen Participation Panel, regular newsletters, and the project website. Public information meetings were conducted at key mileposts during preparation of the EIS. Meetings were held in the District of Columbia and in Virginia. The meetings included updates on the status of the project as a whole and a focus on local concerns. The public meeting process was used to identify the initial set of potential alternatives and to make the initial screening decisions that reduced the number of alternatives to be given detailed analysis. Because of the historic and cultural nature of the corridor, the outreach effort placed a special emphasis on involvement of stakeholders such as the Commission of Fine Arts, local museums and the Smithsonian Institute.
A full range of alternatives were developed to address the purpose and need, including, but not limited to: transportation systems management (TSM), transportation demand management (TDM), various modes of transit, build alternatives, facility expansion and renovation, evacuation routing, congestion mitigation (including but not limited to incident management, work zone operations, access management, and partnering) as well as bicycle and pedestrian modes. KCI also conducted analysis on the suitability of proposed bus lanes on District streets to extend the alternatives for HOT and bus-only lanes on the 14th Street Bridges. KCI performed a study to establish the amount of Metrobus and commuter service buses that use the 14th Street Bridge as a means for crossing the Potomac River each day and for each direction.